Thumbnail
Access Restriction
Open

Author Bilguun, Amarsaikhan ♦ Nakaso, Tetsushi ♦ Harigai, Toru ♦ Suda, Yoshiyuki ♦ Takikawa, Hirofumi ♦ Tanoue, Hideto
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ♦ ANTIPROTONS ♦ CALIBRATION ♦ CONTROL ♦ CROPS ♦ FIELD TESTS ♦ FILTERS ♦ GREENHOUSES ♦ METERS ♦ PHOTONS ♦ PHOTOVOLTAIC CELLS ♦ PLANT GROWTH ♦ PLANTS ♦ PRODUCTION ♦ RADIANT FLUX DENSITY ♦ SOLAR SIMULATORS ♦ WAVELENGTHS
Abstract In recent years, greenhouse automatic-control, based on the measurement of solar irradiance, has been attracting attention. This control is an effective method for improving crop production. In the agricultural field, it is necessary to measure Photon Flux Density (PFD), which is an important parameter in the promotion of plant growth. In particular, the PFD of Photosynthetically Active Radiation (PAR, 400-700 nm) and Plant Biologically Active Radiation (PBAR, 300-800 nm) have been discussed in agricultural plant science. The commercial quantum meter (QM, PAR meter) can only measure Photosynthetically Photon Flux Density (PPFD) which is the integrated PFD quantity on the PAR wavelength. In this research, a band-spectral pyranometer or quantum meter using PVs with optical bandpass filters for dividing the PBAR wavelength into 100 nm bands (five independent channels) was developed. Before field testing, calibration of the instruments was carried out using a solar simulator. Next, a field test was conducted in three differing weather conditions such as clear, partly cloudy and cloudy skies. As a result, it was found that the response rate of the developed pyranometer was faster by four seconds compared with the response rate of the commercial pyranometer. Moreover, the outputs of each channel in the developed pyranometer were very similar to the integrated outputs of the commercial spectroradiometer. It was confirmed that the solar irradiance could be measured in each band separately using the developed band-spectral pyranometer. It was indicated that the developed band-spectral pyranometer could also be used as a PV band-spectral quantum meter which is obtained by converting the band irradiance into band PFD.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-02-01
Publisher Place United States
Volume Number 1709
Issue Number 1


Open content in new tab

   Open content in new tab